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# Maintainer: Shalygin Konstantin <k0ste@k0ste.ru>
# Contributor: Shalygin Konstantin <k0ste@k0ste.ru>

pkgname='snmp_exporter'
pkgver='0.24.1'
pkgrel='1'
pkgdesc='SNMP exporter for Prometheus'
arch=('x86_64' 'i686' 'aarch64')
_uri='github.com/prometheus'
url="https://${_uri}/${pkgname}"
license=('Apache')
makedepends=('go' 'yamllint')
source=("${url}/archive/refs/tags/v${pkgver}.tar.gz"
        "${pkgname}.service"
        "${pkgname}.sysusers")
sha256sums=('9f9a627e273ab257e9884b45446300fc405e2196eeeff3bc85029fe2fa11870d'
            '0f1b59f5b416b37665ddb5ab3cf40a4fc4bf0c4622f68da018793194dc2f1206'
            '2747fabb4e56b808361eb7dd7acf9729ab8973d1ebe2f857dd56f6c71f71e45f')
backup=("etc/prometheus/snmp.yml")

prepare() {
  export GOPATH="${srcdir}/gopath"
  export GOBIN="${GOPATH}/bin"
  mkdir -p "${GOPATH}/src/${_uri}"
  ln -snf "${srcdir}/${pkgname}-${pkgver}" "${GOPATH}/src/${_uri}/${pkgname}"
}

build() {
  cd "${GOPATH}/src/${_uri}/${pkgname}"
  eval "$(go env | grep -e "GOHOSTOS" -e "GOHOSTARCH")"
  GOOS="${GOHOSTOS}" GOARCH="${GOHOSTARCH}" BUILDTAGS="netgo" \
  go build -x \
    -buildmode="pie" \
    -trimpath \
    -mod="readonly" \
    -modcacherw \
    -ldflags "-linkmode external -extldflags ${LDFLAGS} \
    -X github.com/prometheus/common/version.Version=${pkgver} \
    -X github.com/prometheus/common/version.Revision=$(git rev-parse HEAD) \
    -X github.com/prometheus/common/version.Branch=$(git describe --all --contains --dirty HEAD) \
    -X github.com/prometheus/common/version.BuildUser=$(whoami)@$(hostnamectl hostname) \
    -X github.com/prometheus/common/version.BuildDate=$(date -d@"$SOURCE_DATE_EPOCH" +%Y%m%d-%H:%M:%S)"

}

package() {
  pushd "${GOPATH}/src/${_uri}/${pkgname}"
  install -Dm755 "${pkgname}" "${pkgdir}/usr/bin/${pkgname}"
  install -Dm640 -o210 -g210 "snmp.yml" "${pkgdir}/etc/prometheus/snmp.yml"
  popd
  install -Dm644 "${pkgname}.service" "${pkgdir}/usr/lib/systemd/system/${pkgname}.service"
  install -Dm644 "${pkgname}.sysusers" "${pkgdir}/usr/lib/sysusers.d/${pkgname}.conf"
}